/*
 * Copyright 2023 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package androidx.tv.material3

import androidx.compose.foundation.ExperimentalFoundationApi
import androidx.compose.foundation.relocation.bringIntoViewResponder
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.composed
import androidx.compose.ui.geometry.Offset
import androidx.compose.ui.geometry.Rect
import androidx.compose.ui.layout.onSizeChanged
import androidx.compose.ui.platform.debugInspectorInfo

// Suppressed the deprecation because BringIntoViewModifierNode is not
// available in compose.ui 1.7.x
@Suppress("DEPRECATION")
@OptIn(ExperimentalFoundationApi::class)
internal fun Modifier.bringIntoViewIfChildrenAreFocused(): Modifier =
    composed(
        inspectorInfo = debugInspectorInfo { name = "bringIntoViewIfChildrenAreFocused" },
        factory = {
            var myRect: Rect = Rect.Zero
            this.onSizeChanged {
                    myRect = Rect(Offset.Zero, Offset(it.width.toFloat(), it.height.toFloat()))
                }
                .bringIntoViewResponder(
                    remember {
                        object : androidx.compose.foundation.relocation.BringIntoViewResponder {
                            // return the current rectangle and ignoring the child rectangle
                            // received.
                            @ExperimentalFoundationApi
                            override fun calculateRectForParent(localRect: Rect): Rect = myRect

                            // The container is not expected to be scrollable. Hence the child is
                            // already in view with respect to the container.
                            @ExperimentalFoundationApi
                            override suspend fun bringChildIntoView(localRect: () -> Rect?) {}
                        }
                    }
                )
        },
    )
